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Hot Rolled Steel Strips in Coils_Hot Rolled Coil

Hot Rolled Steel Strips in Coils_Hot Rolled Coil

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get latest price
Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
10000 m.t./month

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Item specifice

Type:
Carbon Steel
Shape:
Steel Coil

Hot Rolled Steel Strips in Coils_Hot Rolled Coil

 

Quick Details

Name

Hot Rolled Steel Coil

Standard

GB/ASTM/SAE/AISI/DIN/JIS/EN/BS

Surface Treatment:

Black/Peeling/Polished/Machined  

Delivery Condition:

Hot Rolled or Forged/Peeled or Black Surface

Test

SGS/UT 100% Elements Testing

Certificate:

ISO/Mill Certificate

Service:

24 hours online service /

more than 20 years trading and manufacture 

Quality Assurance:

the third party inspection, such as SGS, BV, TUV…etc. is acceptable

Packaging Details:

Seaworthy Packaging or as per customer's packing instruction

 

Specification

Product Name

Steel Grade

Thickness

Width

Application

 

 

mm

m

General structural 

steel

Q195,Q215A-Q235A/B/C/D

1.9~25.4

0.7~2

normal construction

Q275A/B/C/D; SS330,SS400,SPHT1/2/3

Low Carbon   steel

SPCC,SPHC,St12,SAE1008; SPHD,SPCDK,St12,St13; SPHE,SPCE,St14 IF3 BH340

1.9~25.4

0.7~2

Applied for cold rolling

Carbon      constructional quality steel

08-45#,08Al15Al,S 20C S 35C 

1.9~25.4

0.7~2

After being machined 

S 45C, K08AlZ06-10AlP

and hot treated to used as mechanical component

Low-alloy constructional  steel

SM490ASM490YA15Mn, Q345A Q345B Q345C Q345D

1.9~25.4

0.7~2

normal construction

Hot Rolled Steel   Chequered Coil

Q235 and custom

2.0~ 8.0

0.9

 

 

Company Information

CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

 

After-sale service

l  CNBM provides the services and support you need for every step of our cooperation. We’re the business partners you can trust; you can relax and get on with doing business. 

l  For any problem, please kindly contact us at any your convenient time, we’ll reply you in our first priority within 24 hours

Advantages 

Industry experience over 20 years.

Shipment of goods -More than 70 countries worldwide.

The most convenient transport and prompt delivery.

Competitive price with best service.

High technical production line with top quality products.

High reputation based on best quality products.

 

Product Show

Hot Rolled Steel Strips in Coils_Hot Rolled Coil

 

FAQ

 

Are you a trading company or manufacturer?

Manufacturer

What’s the MOQ?

3 metric ton

What’s your delivery time? 

15-35 days after downpayment received

Do you Accept OEM service?

Yes

what’s your delivery terms?

FOB/CFR/CIF

What's the Payment Terms?

30% as deposit,70% before shipment by T/T

Western Union acceptable for small amount.

L/C acceptable for large amount.

Scrow ,Paybal,Alipay are also ok 

Why  choose  us?

Chose happens because of quality, then price, We can give you both. 

Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals.

What's your available port of Shipment?

Main Port, China

What’s your featured  services?

Our service formula: good quality+ good price+ good service=customer's trust

Where are your Market?

Covering more than 160 countries in the world

 

Q:What are the requirements for special steel used in oil and gas equipment manufacturing?
The requirements for special steel used in oil and gas equipment manufacturing include high strength and corrosion resistance to withstand harsh operating conditions, such as high pressure, temperature, and exposure to corrosive substances. It should also have excellent fatigue resistance and toughness to ensure long-term reliability. Additionally, the steel should be able to maintain its mechanical properties even at low temperatures and possess good weldability for ease of fabrication and assembly. Compliance with industry standards, such as API specifications, is also essential to ensure quality and compatibility with other components.
Q:What are the different applications of tool special steel?
Tool special steel has various applications across industries such as automotive, aerospace, construction, and manufacturing. It is commonly used for making cutting tools, dies, molds, and components that require high strength, durability, and resistance to wear and corrosion. Additionally, tool special steel finds use in power transmission systems, machine parts, and even surgical instruments. Its versatility and ability to withstand extreme conditions make it a crucial material in many applications where precision and reliability are paramount.
Q:What are the different methods of controlling the grain size in special steel?
To achieve desired mechanical properties and performance, there are multiple approaches available for controlling the grain size in special steel. The following are some of the techniques that can be employed: 1. Alloying: The grain size in steel can be controlled by carefully selecting and managing the composition of alloying elements. Elements like niobium, vanadium, and titanium have proven effective in refining the grain size. 2. Heat treatment: The grain size can be regulated through the process of heat treatment. Techniques such as annealing, normalizing, and quenching can be utilized to manipulate the grain size. For example, slow cooling during annealing encourages the growth of larger grains, while rapid cooling during quenching leads to smaller grain sizes. 3. Deformation processing: Mechanical deformation methods like rolling, forging, or extrusion can aid in refining the grain structure. These processes induce strain and facilitate the formation of smaller and more uniform grains. 4. Grain growth inhibitors: The addition of specific elements like aluminum or zirconium to the steel can act as inhibitors for grain growth. These elements create fine particles that impede the growth of grains during heat treatment, resulting in a smaller grain size. 5. Control of transformation temperature: Manipulating the transformation temperature during heat treatment allows for control over the grain size. Lowering the austenitizing temperature, for example, can yield a finer grain structure in the final product. 6. Rapid solidification: Employing techniques such as spray forming or rapid quenching can lead to an ultrafine-grained microstructure. The rapid cooling prevents grain growth, resulting in a fine and homogeneous grain structure. 7. Severe plastic deformation (SPD) techniques: Techniques like equal channel angular pressing (ECAP) or high-pressure torsion (HPT) impose significant strain on the material, leading to a refined grain structure. These methods are commonly used for producing ultrafine-grained or nanostructured steels. It is essential to consider the desired properties, alloy composition, and intended application of the final product when choosing a method for controlling the grain size in special steel.
Q:How does sulfur affect the machinability of special steel?
Sulfur can have both positive and negative effects on the machinability of special steel. On one hand, sulfur acts as a free-machining element when added in small amounts. It forms sulfide inclusions that help improve the chip-breaking ability during machining, resulting in better surface finish, reduced tool wear, and improved cutting speeds. This is particularly beneficial for high-speed machining operations. On the other hand, excessive sulfur content can have detrimental effects on machinability. High levels of sulfur can lead to the formation of brittle sulfide inclusions, causing poor machinability and reduced mechanical properties. It can result in increased tool wear, poor surface finish, and lower cutting speeds. Additionally, sulfur can promote the formation of built-up edge, which further hampers the machinability of special steel. Therefore, it is crucial to maintain an optimal sulfur content in special steel to strike a balance between improved machinability and maintaining the desired mechanical properties. Proper control of sulfur levels in the steel composition, along with appropriate machining techniques and tool selection, is necessary to achieve efficient and high-quality machining of special steel.
Q:How does special steel contribute to the industrial machinery aftermarket industry?
Special steel plays a crucial role in the industrial machinery aftermarket industry by providing high-quality, durable, and customized components that are essential for repairing and maintaining machinery. Its unique properties, such as high strength, toughness, corrosion resistance, and heat resistance, enable the production of precision components that can withstand heavy industrial usage. This contributes to the efficiency, reliability, and longevity of machinery, reducing downtime and overall costs for businesses in the aftermarket industry.
Q:What are the main factors affecting the corrosion fatigue strength of special steel?
The corrosion fatigue strength of special steel is influenced by several factors. Firstly, the composition of the steel plays a crucial role. Special steels typically contain various alloying elements such as chromium, nickel, molybdenum, and copper, which enhance their corrosion resistance. The presence and amount of these elements can significantly affect the corrosion fatigue strength of the steel. Higher levels of alloying elements generally improve the resistance to corrosion fatigue. Secondly, the surface condition of the steel is important. Any surface defects, such as scratches, pits, or roughness, can act as stress concentrators and accelerate the initiation and propagation of corrosion fatigue cracks. Additionally, the presence of surface contaminants, such as dirt, grease, or salts, can increase the corrosive environment and reduce the corrosion fatigue strength of the steel. Thirdly, the environmental conditions in which the steel is exposed play a significant role. Corrosion fatigue occurs due to the combined action of cyclic loading and a corrosive environment. Factors such as temperature, humidity, pH, and the presence of corrosive substances like saltwater or chemicals can accelerate the corrosion process and reduce the fatigue strength of the steel. Furthermore, the mechanical properties of the steel, such as its hardness, strength, and ductility, also influence its corrosion fatigue strength. Higher strength and hardness can enhance the resistance to fatigue crack initiation, while greater ductility can improve the resistance to crack propagation. However, excessive hardness or brittleness can decrease the corrosion fatigue strength. Lastly, the design and manufacturing processes of components made from special steel can impact their corrosion fatigue strength. Factors such as welding techniques, heat treatment, and surface finishing can introduce residual stresses or alter the microstructure of the steel, affecting its corrosion fatigue behavior. Overall, the corrosion fatigue strength of special steel is influenced by its composition, surface condition, environmental conditions, mechanical properties, and manufacturing processes. Understanding and appropriately addressing these factors are crucial for enhancing the corrosion fatigue resistance of special steel components.
Q:Can special steel be used in the musical instrument manufacturing industry?
Yes, special steel can be used in the musical instrument manufacturing industry. It can be utilized for various components of musical instruments, such as strings, keys, and structural parts, to enhance durability, tone quality, and overall performance.
Q:How does special steel contribute to the automotive safety?
Special steel, such as high-strength steel, plays a crucial role in enhancing automotive safety. It is used in various components of vehicles, including the chassis, body structure, and safety systems, to provide superior strength and durability. This type of steel helps improve crashworthiness by absorbing and distributing impact energy, reducing the risk of passenger injury. Additionally, special steel helps optimize the weight-to-strength ratio of vehicles, allowing manufacturers to design lighter yet safer cars that offer improved fuel efficiency and handling.
Q:How does tool and die steel maintain its hardness and wear resistance?
Tool and die steel maintains its hardness and wear resistance through a combination of factors. Firstly, it is made from high carbon content steel, which provides inherent hardness. Additionally, it undergoes heat treatment processes such as quenching and tempering, which further enhance its hardness and wear resistance. These processes involve rapid cooling and reheating to precisely controlled temperatures, transforming the steel's microstructure and creating a fine, uniform grain structure. This refined grain structure improves the steel's hardness and resistance to wear, making it suitable for demanding tool and die applications.
Q:What are the main factors affecting the strength of special steel?
The main factors affecting the strength of special steel include the composition of the steel, heat treatment processes, and the presence of impurities and defects in the material. Additionally, factors such as grain size, crystal structure, and the presence of alloying elements also play a significant role in determining the strength of special steel.

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